White seed color in common bean (Phaseolus vulgaris) results from convergent evolution in the P (pigment) gene

© 2018 The Authors. New Phytologist © 2018 New Phytologist Trust.

Détails bibliographiques
Publié dans:The New phytologist. - 1979. - 219(2018), 3 vom: 13. Aug., Seite 1112-1123
Auteur principal: McClean, Phillip E (Auteur)
Autres auteurs: Bett, Kirstin E, Stonehouse, Robert, Lee, Rian, Pflieger, Stephanie, Moghaddam, Samira Mafi, Geffroy, Valerie, Miklas, Phil, Mamidi, Sujan
Format: Article en ligne
Langue:English
Publié: 2018
Accès à la collection:The New phytologist
Sujets:Journal Article Phaseolus vulgaris basic helix-loop-helix (bHLH) convergent evolution diversification domestication flavonoid biosynthesis
Description
Résumé:© 2018 The Authors. New Phytologist © 2018 New Phytologist Trust.
The presence of seed color in common bean (Phaseolus vulgaris) requires the dominant-acting P (pigment) gene, and white seed is a recessive phenotype in all domesticated races of the species. P was classically associated with seed size, thus describing it as the first genetic marker for a quantitative trait. The molecular structure of P was characterized to understand the selection of white seeds during bean diversification and the relationship of P to seed weight. P was identified by homology searches, a genome-wide association study (GWAS) and gene remodeling, and confirmed by gene silencing. Allelic variation was assessed by a combination of resequencing and marker development, and the relationship between P and seed weight was assessed by a GWAS study. P is a member of clade B of subclass IIIf of plant basic helix-loop-helix (bHLH) proteins. Ten race-specific P alleles conditioned the white seed phenotype, and each causative mutation affected at least one bHLH domain required for color expression. GWAS analysis confirmed the classic association of P with seed weight. In common bean, white seeds are the result of convergent evolution and, among plant species, orthologous convergence on a single transcription factor gene was observed
Description:Date Completed 27.09.2019
Date Revised 30.09.2020
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.15259